Coil-winding apparatus

ABSTRACT

A rotary coil-winding head having diametrically opposed jawmounting members mounted for movements radially of the axis of rotation of the head, and pairs of wire receiving jaw elements mounted on the jaw-mounting members for movement of the jaw elements of each pair relative to each other and to the jaw elements of the other pair for winding coils of various dimensions.

United States Patent Olson 1 Jan. 18,1972

[ COIL-WINDING APPARATUS [72] Inventor: Edwin N. Olson, 109 1st St. S. E., Minot,

I N. Dak. 58701 [22] Filed: Dec. 11, 1969 [21] Appl.No.: 884,212

[52] US. Cl ........l40/92.2, 242/1 10.3, 242/116 [51] InLCl. ..B21f 3/00 [58] Field olsearch ..140/92.l,92.2;242/1l0, 115,

[56] References Cited I Segur 140/922 Stratton 140/922 Primary ExamineF-Lowell A. Larson Attorney-Merchant & Gould [5 7] ABSTRACT A rotary coil-winding head having diametrically opposed jawmounting members mounted for movements radially of the axis of rotation of the head, and pairs of wire receiving jaw elements mounted on the jaw-mounting members for movement of the jaw elements of each pair relativeto each other and to the jaw elements of the other pair for winding coils of various dimensions.

3 Claims, 10 Drawing Figures PATENTED M18872- 3,635,260

SHEET 1 BF 2 i 27 35 4 z 34 .FIG 4 i v I NVENTOR. EDWIN N OLSON ATTORNEYS PATENIEB m 1 we SHEET 2 BF 2 INVENTOR. EDWIN N OLSON A T TOFPNEYS COIL-WINDING xrmnx'rus This invention relates to apparatus for winding coils for electrical motors, and an important object thereof is the provision of coil-winding apparatus which can be quickly and easily adjusted to have wound thereon coils of a wide variety of sizes and of different shapes.

Another object of this invention is the provision of coilwinding apparatus which can be produced at low. cost, and which is rugged in construction and durable in use.

To the above ends, the present invention involves an elongated rotary head having a transverse axis of rotation centrally between its opposite ends. A pair of jaw-mounting members is mounted on the head, in diametrically opposed relationship, for independent movements radially toward and away from the axis of rotation. Each jaw-mounting member is provided with a pair of wire receiving and supporting jaw elements mounted thereon for pivotal movements of each jaw element independently of its respective jaw member and the jaw elements of the other pair, on an axis parallel to the axis of rotation of the head. Locking means releasably locks each jawmounting member in desired set positions on the head, other locking means rcleasably locking the jaw elements in set positions on their respective mounting members.

DESCRIPTION OF THE DRAWINGS FIG. I is a view in top plan of a coil-winding apparatus produced in accordance with this invention, some parts being broken away and some parts being shown in section;

FIG. 2 is a view in end elevation, some parts being broken away;

FIG. 3 is a view partly in end elevation and partly in section, taken substantially on the line 3-3 of FIG. 1;

FIG. 4 is a fragmentary view in side elevation;

FIG. 5 is a view in top plan of a modified form of coil-winding apparatus;

FIG. 6 is a view in end elevation of the apparatus of FIG. 5;

FIG. 7 is a view partly in end elevation and partly in section, taken substantially on the line 77 of FIG. 6;

FIG. 8 is a view partly in transverse section and partly in side elevation, taken substantially on the line 8-8 of FIG. 5; and

FIGS. 9 and 10 are fragmentary sections taken on the lines 99 and 10- 10 respectively of FIG. 5.

DETAILED DESCRIPTION In the embodiment of the invention illustrated in FIGS. 1-4, an elongated rotary head, indicated generally at 11 is shown as comprising an enlarged central head having an elongated axial socket 13 for reception of a rotary drive shaft 14, and a pair of diametrically opposed radial arms 15 having elongated radial slots 16 extending therethrough. The drive shaft 14 may be supported in the usual bearings, not shown, or may be the drive shaft of a drive motor, not shown, the shaft being secured within the socket 13 by setscrews or the like 17.

A pair of flat jaw-mounting plates 18 are generally sector shaped in outline, and are mounted one each on a different one of the arms 15 by mounting studs 19 each extending through an adjacent one of the slots 16 and having screw threaded thereon washer equipped wingnuts 20. The studs 19 are of a size to be slidably contained in the slots 16, each of the mounting plates 18 being further provided with a guide element in the nature of a pin or stud 21 that extends into and is slidably contained within an adjacent slot 16 in spaced parallel relation to an adjacent one of the mounting studs 19. Radially outwardly of its respective mounting stud 19, each of the mounting plates 18 is formed to provide a radially outwardly opening slot 22 disposed in overlying aligned relationship to its adjacent slot 16. Radially outward movement of the mounting plates 18 is limited by a pair of nut-equipped stop screws 23 one each mounted in a different one of the slots 16. Each of the stop screws 23 has a head 24 thereon that is machined of? at one side to provide a shoulder 25 that is adapted to engage the adjacent outer edge portion of the adjacent mounting plate 18 at opposite sides of its slot 22. When it is desired to move the mounting plates 18 radially outwardly further than is permitted by engagement of the members 18 with their respective stop screw shoulders 25, the nuts of the stop screws 23 are loosened to permit the heads 24 to overlie the plates 18 and the screws 23 to be received in the slots 22, as shown by dotted lines in FIG. 2.

Each of the jaw mounting plates 18 is provided with a pair of jaw elements 26, each jaw element comprising an elongated handle portion 27 disposed in face-to-face engagement with the side of its respective mounting plate 18 opposite the arms 15, a shank portion 28 projecting in a direction parallel to the axis of the head 11 away from the inner end of its respective handle portion 27, and a wire-engaging lug portion 29 at the axially outer end of each shank portion and projecting generally toward the axis of the head 11, from its respective shank portion 28. Each jaw element 26 further includes a wire engaging and supporting pin 30 that is disposed on an axis in radially outwardly spaced parallel relation to the axis of the head 11, each pin 30 having a diametrically enlarged screwthreaded portion 31 that is screw threaded in its respective lug portion 29 for adjustment in directions parallel to the axis of the head 11. Each pin 30 is provided with a cross pin or the like 32 whereby the same may be easily rotated, and has screw threaded thereon a washer equipped locknut 33, see particularly FIGS. 1 and 3. Each jaw element 26 ismounted on its respective jaw-mounting plate 18 by a lockwasher equipped mounting screw 34 that extends through a suitable opening in the mounting plate 18 and is screw threaded in its respective handle portion 27, each mounting screw 34 being disposed on an axis parallel to the axis of the head 11. As shown particularly in FIG. 2, each handle portion 27 tapers toward its radially outer end, which outer end terminates adjacent an arcuate outer edge 35 of its respective mounting plate I8. Each mounting plate 18 is formed to provide indexing notches 36 and dimples or other suitable marks 37 which aid in setting the jaw elements 26 to locate the pins 30 thereof in desired positions transversely of the longitudinal dimension of the head 11. Varying of the positions of the pins 30 in directions longitudinally of the head 11 is accomplished by moving the mounting plates 18 longitudinally with respect to their respective arms 15.

An elongated retainer mounting stud 38 is disposed on the axis of rotation of the head 11, and has its axially inner end screw threaded in the central portion 12 of the head 11 and secured by a locknut 39, the stud 38 extending axially outwardly from the head 11 between the mounting jaws 28. A wire retainer plate 40 has a central opening which axially slidably receives the stud 38, the retainer plate 40 being adapted to be disposed in abutting engagement with the outer ends of the pins 30 and held thereagainst by a wingnut or the like 41 screw threaded on the stud 38. The lug portions 29, pins 30 and wire retainer plate 40 cooperate to provide a spool on which is wound a length of wire to provide a coil 42 thereof. The wire retainer plate 40 is fonned to provide a plurality of radially outwardly opening notches or slots 43 that are located between areas engaged by the outer ends of the pins 30, whereby string or wire may be wrapped around circumferentially spaced portions of the coil 42 to hold the coil 42 together when removed from the winding apparatus, the wire or string ties being indicated at 44. When a wound coil 42 is tied, as indicated at 44, the wingnut 41 and retainer plate 40 are removed from the stud 38, after which the wound and tied coil 42 is slipped off the pins 30. The plate 40 is then replaced and locked on the stud 38 making the apparatus ready for the winding of a subsequent coil. It will be appreciated that, by adjustably moving the mounting plates 18 longitudinally of their respective arms 15, and by swinging the jaw elements 26 on their respective mounting plates 18, generally rectangular coils 42 of many various dimensions and square or rectangular shape may be wound. By adjusting the pins 30 axially of the apparatus, the axial dimension of the coil 42 may be varied as required.

in the modified form of the invention illustrated in FIGS. 5-10, a head 11 substantially identical to the head 11, is shown as having a central portion 12 including an axial socket 13 for reception of a drive shaft 14'. The head 11 includes a pair of diametrically opposed radial arms 15 having longitudinal slots 16 therethrough and in which are'mounted nutequipped stop screws 23' having heads 24 that define stop or abutment shoulders 25'.

A pair of jaw-mounting members in the nature of sectorshaped plates 45 are mounted one each on a different one of the arms 15' for sliding movements longitudinally of their respective arms 15', by means of nut-equipped studs 46 secured to each of the mounting plates 45 and projecting through adjacent ones of the slots 16'. Guide pins 47 are mounted one each on a different one of the plates 45, and are slidably received in the slots 16 in spaced parallel relationship to their respective studs 46, to maintain the mounting plates 45 in predetermined relationship to their respective arms 15' in all positions of movement of the plates 45 longitudinally of their respective arms 15. Each of the mounting plates 45 is provided with a radially outwardly opening notch or slot 48 similar to the slots 22 in the mounting plates 18, and for the same purpose as the slots 22. The stop screws 23' may be disposed and locked in any desired position in their respective slots 16 to limit radially outward movements of the mounting plates 45 or, if desired, the stop screws 23 may be contained within the slots 48 when it is desired to move the plates 45 toward their radially outer limit of movement.

Each of the mounting plates 45 is provided with a pair of platelike jaw elements 49 that are generally right triangular in outline, defining base edges 50 in substantially sliding engagement with the surfaces of their respective mounting plates 45 opposite the arms 15', elongated altitude edges 51 extending outwardly from their respective mounting plates 45 in spaced parallel relationship to the axis of rotation of the head 11', and hypotenuse portions defining a plurality of axially spaced radially outwardly opening wire receiving grooves 52. As shown particularly in FIGS. 5 and 8, the grooves 52 have axially generally fiat bottoms 53 arranged in step formation from the base ends of the jaw plates 49 toward the axially outer ends thereof. The jaw elements 49 are pivotally mounted on their respective mounting plates 45 by means of hinges 54 each comprising an elongated pintle 55 rigidly secured at one end to a different one of the mounting plates 45 and extending outwardly therefrom in parallel relationship to the axis of rotation of the head 11', and a pair of fiat hinge leaves 56 each rigidly secured to a difierent one of the jaw elements 49 and journaled on an adjacent one of the pintles 55. Thus, the jaw elements 49 of each pair thereof are movable about a common axis. A pair of stop pins or screws 57 mounted on each of the mounting plates 45 engage adjacent ones of the jaw elements 49 to limit swinging movements of the jaw elements 49 in a direction away from each other.

Each of the jaw elements 49 is provided with a generally C- shaped clamp 58 that partially encompasses the arcuate edge portion 59 of its respective mounting plate 45, each clamp being provided with a clamping screw 60 that has an inner end adapted to be received in one of a plurality of dimples or recesses 61 in the mounting plates adjacent the arcuate edges 59 thereof, to releasably lock each jaw element 49 in a desired set position of its swinging movement relative to the mounting plates 45. it will be noted that the arcuate edges 59 of the mounting plates 45 are provided with indexing notches 62 for ready reference in setting the jaw elements in desired positions.

Like the coil-winding apparatus illustrated in FIGS. 1-4, the modification of FIGS. 5-10 is adapted to have wound thereon coils of square or rectangular shape in a wide variety of sites. In addition, the coil-winding apparatus of FIGS. 5-10 is particularly adapted for winding of several different sized coils at one time, and is particularly adapted for winding coils for single-phase electrical motors. When a given coil or coils, not

shown, are wound within selected grooves 52 of the jaw elements 49, it is only necessary to loosen the win nuts on the studs 46 and move the mounting plates 45 ra rally toward each other to remove the wound coils from the jaws 49. For winding additional coils of like sizes as the preceding coils, it is only necessary to reset the mounting plates in the preceding positions and retighten the wingnuts on the studs 46.

lclaim:

l. Coil-winding apparatus comprising:

a. an elongated rotary head having a transverse axis of rotation centrally between its opposite ends, and defining a pair of diametrically opposed radially elongated slots;

b. a pair of jaw-mounting members mounted on said head in diametrically opposed relationship for movements transversely toward and away from said axis, each of said mounting members having a radial slot aligned with an adjacent one of said radially elongated slots;

c. locking means for releasably locking each of said jawmounting members in selected positions of said movement thereof;

. pairs of wire-receiving jaw elements;

e. mounting means mounting each pair of said jaw elements on a different one of said jaw-mounting members for pivotal movements of the jaw elements of said pairs relative to each other and to their respective jaw-mounting members on axes parallel to the axis of rotation of said head;

f. means for releasably locking said jaw elements in selected positions of said pivotal movements thereof;

g. and a pair of stop elements each comprising a nutequipped headed stop screw extending through a different one of said radially extended slots and positioned to be disposed radially outwardly of the adjacent jawmounting member to engage the same to limit radially outward movement thereof, and selectively to extend through said slot in the adjacent jaw-mounting member and clamp the same against the head radially outwardly of the adjacent one of said jaw-mounting member locking means.

2. The coil-winding apparatus defined in claim 1 in which said jaw elements of each pair thereof are independently mounted on their respective jaw-mounting members on parallel axes spaced apart circumferentially relative to the axis of rotation of said head, said jaw elements having inner end portions radially spaced from said parallel axes defining surfaces disposed in a generally common plane transversely of the axis of rotation of said head, said inner end portions including wire engaging and supporting pins extending in a common direction in radially outwardly spaced parallel relation to the axis of rotation of the head, characterized by a generally flat wire retainer plate and means removably mounting said wire retainer plate in abutting engagement with the extended ends of said pins, said jaw element surfaces, pins and wire retainer plate cooperating to provide a wire-receiving spool.

3. The coil-winding apparatus defined in claim 1 in which said jaw elements comprise similar axially elongated jaw plates of generally right triangular outline and having axially inner generally radial base ends disposed adjacent their respective jaw-mounting members, radially inner altitude edges extending axially outwardly from said base ends, and hypotenuse portions each defining a plurality of axially spaced radially outwardly opening wire-receiving grooves having axially generally flat bottoms arranged in step formation from the base ends of their respective jaw plates to the outer ends thereof, said mounting means comprising a pair of pivot pins one each extending in a direction axially outwardly of a respective one of said jaw-mounting members, said jaw plates of each pair thereof having means on their altitude edges for pivotal mounting on one of said pivot pins whereby the jaw plates of each pair thereof are pivotally movable relative to each other and their respective mounting member on the common axis of their respective pivot pin.

a a: a 4 4 

1. Coil-winding apparatus comprising: a. an elongated rotary head having a transverse axis of rotation centrally between its opposite ends, and defining a pair of diametrically opposed radially elongated slots; b. a pair of jaw-mounting members mounted on said head in diametrically opposed relationship for movements transversely toward and away from said axis, each of said mounting members having a radial slot aligned with an adjacent one of said radially elongated slots; c. locking means for releasably locking each of said jawmounting members in selected positions of said movement thereof; d. pairs of wire-receiving jaw elements; e. mounting means mounting each pair of said jaw elements on a different one of said jaw-mounting members for pivotal movements of the jaw elements of said pairs relative to each other and to their respective jaw-mounting members on axes parallel to the axis of rotation of said head; f. means for releasably locking said jaw elements in selected positions of said pivotal movements thereof; g. and a pair of stop elements each comprising a nut-equipped headed stop screw extending through a different one of said radially extended slots and positioned to be disposed radially outwardly of the adjacent jaw-mounting member to engage the same to limit radially outward movement thereof, and selectively to extend through said slot in the adjacent jawmounting member and clamp the same against the head radially outwardly of the adjacent one of said jaw-mounting member locking means.
 2. The coil-winding apparatus defined in claim 1 in which said jaw elements of each pair thereof are independently mounted on their respective jaw-mounting members on parallel axes spaced apart circumferentially relative to the axis of rotation of said head, said jaw elements having inner end portions radially spaced from said parallel axes defining surfaces disposed in a generally common plane transversely of the axis of rotation of said head, said inner end portions including wire engaging and supporting pins extending in a common direction in radially outwardly spaced paRallel relation to the axis of rotation of the head, characterized by a generally flat wire retainer plate and means removably mounting said wire retainer plate in abutting engagement with the extended ends of said pins, said jaw element surfaces, pins and wire retainer plate cooperating to provide a wire-receiving spool.
 3. The coil-winding apparatus defined in claim 1 in which said jaw elements comprise similar axially elongated jaw plates of generally right triangular outline and having axially inner generally radial base ends disposed adjacent their respective jaw-mounting members, radially inner altitude edges extending axially outwardly from said base ends, and hypotenuse portions each defining a plurality of axially spaced radially outwardly opening wire-receiving grooves having axially generally flat bottoms arranged in step formation from the base ends of their respective jaw plates to the outer ends thereof, said mounting means comprising a pair of pivot pins one each extending in a direction axially outwardly of a respective one of said jaw-mounting members, said jaw plates of each pair thereof having means on their altitude edges for pivotal mounting on one of said pivot pins whereby the jaw plates of each pair thereof are pivotally movable relative to each other and their respective mounting member on the common axis of their respective pivot pin. 